Patent US2887477A successfully refreshed from Google Patents.
US2887477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-hydroxy-5-methylsulfonylphenylazodiphenylamine compounds
Assignee: Eastman Kodak Co
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Filing: 1955-09-07
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Granted: 1959-05-19
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Expires: 1975-09-07
Abstract
No abstract record available.
Inventors
- 👤 James M Straley
- 👤 John G Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:13
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A COMPLEX METAL COMPOUND WHICH CONTAINS ONE OF THE METALS SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, COBALT, COPPER, IRON, MANGENESE, NICKED AND VANADIUM IN COMPLEX COMBINATION WITH A MONOAXZO COMPOUND HAVING THE FORMULAR:
Claim 2
Dependent Claim
34 words
A COMPLEX METAL COMPOUND WHICH CONTAINS ONE OF THE METALS SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, COBALT, COPPER, IRON, MANGENESE, NICKED AND VANADIUM IN COMPLEX COMBINATION WITH A MONOAXZO COMPOUND HAVING THE FORMULAR:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |